Loom-shuttle



(No Model.)

M. F. FIELD. LOOM SHUTTLE.

Patented June 15, 1886.

UNITED STATES PATENT OFFICE.

M ILLARD F. FIELD, OF CHELSEA, ASSIGNOB, BY MESNE ASSIGNMENTS, TO THE AMERICAN SPINDLE COMPANY, OF BOSTON, MASSACHUSETTS.

LOOYM-SHUTTLE.

SPECIFICATION forming part of Letters Patent No. 343,579, dated June 15, 1886,.

Application filed June 18, 1885. Serial No. 169,104. (No model) i To all whom, it may concern: tending from the bottom of said socket out- Be it known that I, MILLARD F. FIELD, of wardly through the end of the said shank Chelsea, in the county of Suffolk, State of there is a hole, y, the springObeing elongated Massachusetts, have invented a certain new or extended, as shown at H, and fitted to work 5 and useful Improvement in LoomShutt-les, of in said hole. which thefollowingis adescription sufficiently Attached to the inner end of the spring 0 full, clear, and exact to enable any person and standing at a right angle thereto is an L- skilled in the art or'science to which said inshaped head, 01, the arm i, of which projects ventionappertains to make and use the same, forward in the direction of the spindle over 60 reference being had to the accompanying drawthe upper side of the shank r, in parallelism ings, forming part of this specification, in with the extension H of the spring 0, and at which a right angle to the head (1. The head 01 and Figure 1 is a vertical longitudinal section arm 13 are rounded orcurved at the corner or ofa shuttle embodying my improvement, the angle 2, where they unite to enable them to 65 15 spindle being represented as closed, expanded, pass readily over the roller D as the spindle and locked; and Fig. 2, a like View, the is opened and closed. The spring Eis curved spindle being represented as opened,collapsed, upwardly and provided with a slot, f, through and locked. In each of said views one end of which the attaching-screw 70 passes, the roller the body of the shuttle is represented as D being journaled in its outer or free end. 70 broken off. i The flattened end bof the spring Gis provided 7 Likeletters of referenceindicate correspondwith a diagonally-arranged slot, Z, and iskept ing parts in the different figures of the drawin the slot m by a pin, j, which passes transingsversely through the spindle B and the slot Z,

My invention relates more especiallyto that the inclination of the last-named slot to the 75 class of loom-shuttles which are provided with longitudinal axial line of the spindleB correexpansible spindles; and it consistsin a novel sponding with the inclination of the bottom construction and arrangement of the parts as of the groove on at its forward end, 1;. A prohereinafter more fully set forth and claimed, jection, w, formed in the body of the shuttle the object being to produce a more effective acts as a stop for said spindle when itis closed, 80 and otherwise desirable article of this char-' the shoulder a serving as a stop when it is act-er than is now in ordinary use. opened; but any other suitable means may be The nature and operation of the improveemployedforstopping thespindle,ifpreferred. ment will be readily understood by all 0011- In the use of my improvement the spindle versant with such matters from the following being opened and collapsed, as shown in Fig. 8 5

explanation. 2, if a cop or bobbin is placed on the same and In the drawings, A represents the body of the spindle closed the arm t and head (1 will the shuttle; B, the main portion or body of the be brought into forcible contact with the roller spindle; O, the spring of the spindle; D, the D,and as the rounded corner 2 passes said roller; E, the roller-spring, and H the shank roller the spring 0 will be forced forward,

0 or extension of the spring 0. The spindle B causing its flattened end I) to ride up the inis pivoted at w in the body A, and provided cline 12 until its forward movement is stopped on the upper, side, nearits point t, with an by theend of the slot Zbringing up against the elongated groove, m, the bottom of said groove pin j, after which it will be bent outwardly, being inclined or curved upwardly at its foras shown at 1), thereby expanding the spindle, 5 ward end, as shown at o. The spring 0 is considered as a whole, and securing the cop flattened at its point, as shown at b, the fiator bobbin thereon in a manner which will be tened portion being curved downwardly at readily obvious without a more explicit dethe forward end on its inner or lower edge to scription. As the pivot 03 is disposed below correspond with the curve 12 and fitted to the longitudinal axial line of the extension H, I00 50 slide in the groove m. A socket, h, is formed and the roller D so arranged that when the in the shank r of the main spindle, and eX- spindle is closed said roller will press on the head (I nearly opposite said extension, it will be obvious that the spring E and wheel D will act to lock the spindle when closed or to prevent it from being accidentally opened, as shown in Fig. 1. It will also be obvious that when the spindle is opened the curved or rounded corner zwill ride down over the roller D and pass below its axial line, thereby enabling the spring E and said roller to lock the spindle in that position, as shown in Fig. 2. The object of the incline o is to expand the spindle laterally at or near its point, the point of the spring as it is pushed forward riding up this incline until stopped by the pin 3', as above described, and producing that result.

The object of the socket It is to prevent the portion a of the spring from cramping or binding where it enters the shank 0' when pressure is exerted upon it by the spring E and roller I). The socket may, however, be dispensed with by changing the form of said spring 0 somewhat where it enters the shank 1'.

I do not confine myself to constructing and connecting the spindle and spring as shown, as they may be constructed and connected in a different manner, provided they perform substantially the same functions,

The extension H is fitted to slide longitudinally in a hole, 9 in the shank 7'; but any suit able ways or guides may be provided for said extension at the shank of the spindle.

.It will be understood that the spring 0 is sufiiciently flexible to bend readily when pushed forward, as described; also, that the slot f and screw is enable the spring E and roller D to be adjusted with respect to said spindle as desired.

I am aware that shuttle-spindles have heretofore been provided with springs adapted to slide in the shanks thereof and to bear upon devices for retaining such spindles in open or closed position when the latter were closed; but in the present invention one member of an L-shaped head is rigidly fastened to the inner end of said spring, and the devices for retaining the spindle in open or closed position exert a longitudinal pressure upon said spring through the head referred to when said spindle is closed.

Having thus explained my invention, what I claim is- 1. The spindle 13, provided with the groove in on its upper side near its point, said groove having the incline v at its outer end and the transverse pin j within said groove, in combination with the spring 0, its outer end resting in said groove and provided with a slot engaging said pin, and means for exerting longitudinal pressure upon said spring, substantially as described.

2. The spindle B, provided with the groove on on its upper side nearits point, said groove having the incline v at its outer end and the transverse -pin j within said groove, in 00111- bination with the spring 0, its outer end resting in said groove and provided with a slot engaging said pin, said slot being parallel with the incline '0, and means for exerting longitudinal pressure upon said spring, substantially as described.

3. A shuttle-body, a spindle pivoted therein provided with a longitudinal hole, 7 in its shank, a spring, 0, secured at its outer end to said spindle and sliding at its inner end in said hole, and a head larger than said hole rigidly secured to the inner end of said spring, in combination with aspring, E, provided with a roller, D, forholding said spindle in open or closed position, said spring exerting longitudinal pressure upon the spring 0 through said roller and head when the spindle is closed, substantially as described.

4. A shnttlebody, aspindle pivoted therein provided with a longitudinal hole, y, in its shank, a spring, 0, secured at its outer end to said spindle and sliding at its inner end in said hole, and an L-shaped head one member of which is rigidly secured to the innerend of said spring,while the other member is adapted to slide upon the upper face of the spindleshank, in combination with aspring, 1*], provided with a roller, D, for holding said spindle in open or closed position, said spring exerting longitudinal pressure upon the spring 0 through said roller and head when the spindle is closed, substantially as described.

5. A shuttle-body, aspindle pivoted therein provided with a longitudinal hole, 7 in its shank, and with a groove, m, in its upper face near the point, said groove having the incline 1; at its outer end, a transverse pin, 7, within said groove, a spring, 0, having its outer end provided with a slot for engaging said pin, and its body sliding in said hole, and an L- shaped head one member of which is rigidly secured to the inner end of said spring,while the other member is adapted to slide upon the upper face of the spindle-shank, in combination with aspring, E, provided with a roller, D, for holding said spindle in open or closed position, said spring exerting a longitudinal pressure upon the spring 0 through said roller and head when the spindle is closed, substantially as described.

MILLARD F. FIELD.

\Vitnesses:

O. A. SHAW, L. J. WHITE. 

